21495062438492 has 6 divisors (see below), whose sum is σ = 37616359267368. Its totient is φ = 10747531219244.

The previous prime is 21495062438467. The next prime is 21495062438497. The reversal of 21495062438492 is 29483426059412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21495062438497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2686882804808 + ... + 2686882804815.

It is an arithmetic number, because the mean of its divisors is an integer number (6269393211228).

Almost surely, 2^{21495062438492} is an apocalyptic number.

It is an amenable number.

21495062438492 is a deficient number, since it is larger than the sum of its proper divisors (16121296828876).

21495062438492 is a wasteful number, since it uses less digits than its factorization.

21495062438492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5373765609627 (or 5373765609625 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 59.

The spelling of 21495062438492 in words is "twenty-one trillion, four hundred ninety-five billion, sixty-two million, four hundred thirty-eight thousand, four hundred ninety-two".